Tribology in mines   Seminar proceedings    

 - New Delhi   National Productivity Council Publication India       1979 
 - xv, 269p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>X9(HZ):8p2,N78, L9